/* :root伪类 --为自定义CSS属性  全局声明 可以用var()使用 */
:root {
    /* 颜色 */
    --white: #e9e9e9;
    --gray: #333;
    --blue: #0367a6;
    --lightblue: #008997;
    /* 外边框圆角属性 */
    --button-radius: 0.7rem;
    /* 大小 */
    --max-width: 750px;
    --max-height: 420px;
    /* 字体样式 */
    font-size: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
    align-items: center;
    background-color: var(--white);
    background: url(/static/img/333.jpg);
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 98vh;
    /* display: flex; */
    display: grid;
    /* justify-content: center;
    align-items: center; */
    place-items: center;
}

/* h2字体 */
.from_title {
    font-weight: 300;
    margin: 0;
    margin-bottom: 1.25rem;
}

/* 忘记密码 */
.link {
    color: var(--gray);
    font-size: 0.9rem;
    margin: 1.5rem 0;
    text-decoration: none;
}

/* 整体 */
.container {
    background-color: var(--white);
    border-radius: var(--button-radius);
    box-shadow: 1rem 1rem 2rem rgba(0, 0, 0, .5);
    height: var(--max-height);
    /* max-height: var(--max-height); */
    max-width: var(--max-width);
    width: 100%;   
    overflow: hidden;
    position: relative;
}

/* 登陆注册表单 */
.container_from {
    height: 100%;
    position: absolute;
    top: 0;
    transition: all 0.6s ease-in-out;
}

/* 登录表单 */
.container--signin {
    left: 0;
    width: 50%;
    z-index: 2;
}

.container.right-panel-active .container--signin {
    transform: translateX(100%);
}

/* 注册表单 */
.container--signup {
    left: 0;
    opacity: 0;
    width: 50%;
    z-index: 1;
}

.container.right-panel-active .container--signup {
    animation: show 0.6s;
    transform: translateX(100%);

    opacity: 1;
    z-index: 5;
}

/* 浮层 */
.container-overlay {
    height: 100%;
    left: 50%;
    overflow: hidden;
    position: absolute;
    top: 0;
    transition: transform 0.6s ease-in-out;
    width: 50%;
    z-index: 100;
}

.container.right-panel-active .container-overlay {
    transform: translateX(-100%);
}

.overlay {
    background-color: var(--lightblue);
    background: url('/static/img/333.jpg');
    /* background-color: rgba(255, 255, 255, 0.25); */
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 100%;
    left: -100%;
    position: relative;
    transform: translateX(0);
    transition: transform 0.6s ease-in-out;
    width: 200%;
}

.container.right-panel-active .overlay {
    transform: translateX(50%);
}

.overlay_panel {
    align-items: center;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: center;
    position: absolute;
    text-align: center;
    top: 0;
    transform: translateX(0);
    transition: transform 0.6s ease-in-out;
    width: 50%;
}

.overlay-left {
    transform: translateX(-20%);
}
.container.right-panel-active .overlay-left{
    transform: translateX(0);
}

.overlay-right{
    right: 0;
    transform: translateX(0);
}
.container.right-panel-active .overlay-right{
    transform: translateX(20%);
}
/* 按钮 */
.btn{
    background-color: var(--blue);
    background-image: linear-gradient(90deg,var(--blue) 0% ,var(--lightblue) 74%);
    border-radius: 20px;
    border: 0.2px solid var(--blue);
    color: var(--white);
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1rem;
    padding: 1rem 4rem;
    text-transform: uppercase;
    transition: transform 80ms ease-in;
}
.from .btn{
    margin-top: 1.5rem;
}
.btn:active{
    transform: scale(0.95);
}
.btn:focus{
    outline: none;
}

.from{
    background-color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 5rem;
    height: 100%;
    text-align: center;
}
.input{
    background-color: #fff;
    border: none;
    padding: 1rem 1rem;
    /*margin: 0.5rem 0;*/
    width: 100%;
}

@keyframes show{
    0%,49.9%{
        opacity: 0;
        z-index: 5;
    }
    50%,
    100%{
        opacity: 1;
        z-index: 6;
    }
}

.imsg{
    visibility: hidden;
    font-size: 10px;
    color: rgba(0, 0, 0, .5);
}
